package study.web.servlet.old;

import com.alibaba.fastjson.JSON;
import study.pojo.Brand;
import study.service.impl.BrandServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;


//@WebServlet("/selectAllServlet")
public class SelectAllServlet extends HttpServlet {
     private BrandServiceImpl service=new BrandServiceImpl();
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1.调用BrandService完成查询

        List<Brand> brands=service.selectAll();

        //2.转成json
        String jsonString = JSON.toJSONString(brands);

        //3.写数据
        resp.setContentType("text/json;charset=utf-8");
        resp.getWriter().write(jsonString);

    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        this.doGet(req,resp);
    }
}


